--- service: j.root-servers.net start-period: '2015-09-22T00:00:00Z' end-period: '2015-09-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3788105859 dns-udp-queries-received-ipv6: 520802446 dns-tcp-queries-received-ipv4: 69424000 dns-tcp-queries-received-ipv6: 25201196 dns-udp-responses-sent-ipv4: 3785273786 dns-udp-responses-sent-ipv6: 519486511 dns-tcp-responses-sent-ipv4: 67525396 dns-tcp-responses-sent-ipv6: 23074229